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XDeclaration Class

Represents an XML declaration.

Namespace:  System.Xml.Linq
Assembly:  System.Xml.Linq (in System.Xml.Linq.dll)

public class XDeclaration

An XML declaration is used to declare the XML version, the encoding, and whether or not the XML document is standalone. This class represents the XML concept of an XML declaration.

Just as in the XML standard, declarations are associated with a document. When you create a document, you have the option to specify the declaration for the document. The XDocument class contains the Declaration property, which allows you to set or get the declaration. For information about how to serialize an XML tree with an XML declaration, see Serializing with an XML Declaration.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0